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SubjectRe: __GFP_IO && shrink_[d|i]cache_memory()?

On Sun, 24 Sep 2000, Linus Torvalds wrote:

> I think that shm_swap still needs it - it's doing things with
> rw_swap_page() that means that we cannot run it without GFP_IO.

yep - i only pushed the test inside, it's functionally equivalent - it
only vanished from refill_inactive(). It's basically now a detail of the
lowlevel swapping functions to honor __GFP_IO.

> So it makes sense to leave shm_swap() behaviour unchanged (ie do
> nothing if GFP_IO is not set), but move the GFP_IO test down into
> shm_swap() so that it will (a) match the other cases and (b) be easier
> to change the GFP_IO logic later on if/when we clean up shm.



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